Title :
X-Ray Energy Detection Using Silicon Field Emission Imaging Array
Author :
Wong, Michael ; Hunt, Charles E. ; Diawara, Yacouba
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA
Abstract :
In this paper, silicon field-emission imaging array tips were used for X-ray energy detection. The incident X-ray photon, depending on its photon energy and the material of the detector, will generate a specific number of electron/hole pairs (EHPs) and penetrate an energy-dependant distance into the substrate. The collected electron current generates a distinct pulse width and height, which correlates to the specific energy of the incident photon. The amplified pulses, unlike ordinary energy detectors, are spatially specific to the photon impact; therefore, this method produces both an imager and an energy detector. This capability is unavailable in any other X-ray imaging method and therefore, is valuable in X-ray diffractometric applications
Keywords :
X-ray detection; X-ray diffraction; X-ray imaging; elemental semiconductors; field emitter arrays; silicon; Si; X-ray diffractometric applications; X-ray energy detection; X-ray imaging; X-ray photon energy; electron current; electron/hole pairs; silicon field emission imaging array; Charge carrier processes; Electrons; Optical imaging; Pulse amplifiers; Pulse generation; Silicon; Space vector pulse width modulation; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
Vacuum Nanoelectronics Conference, 2006 and the 2006 50th International Field Emission Symposium., IVNC/IFES 2006. Technical Digest. 19th International
Conference_Location :
Guilin
Print_ISBN :
1-4244-0401-0
DOI :
10.1109/IVNC.2006.335412
